e-Key <span id="jodit_selection_marker_1707912744536_07750075664708134" data-jodit_selection_marker="start" style="line-height: 0; display: none;"></span>v3 - C<span id="jodit_selection_marker_1707912744536_05940297758588309" data-jodit_selection_marker="end" style="line-height: 0; display: none;"></span>ordia
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Interactive keys to the identification of seed plants of southern Africa using keys based on plant morphology.

Boraginaceae - Cordioideae - Cordia L.

Description:

  • Trees or shrubs, variously hairy
  • Leaves alternate, rarely subopposite, petiolate, entire or coarsely toothed
  • Flowers usually yellow or white, bi- or unisexual, subsessile or pedicellate; borne in terminal or axillary dichotomous corymbs, panicles or subglobose clusters of cymes, the branches scorpioid, inflorescences ebracteate
  • Calyx tubular or campanulate; tube as long as corolla tube; lobes 3-5, shorter than tube, ovate; persistent, accrescent
  • Corolla white or yellow, with tube funnel- or salver-shaped; lobes 5, rarely 3-8, oblong, erect, spreading or reflexed, imbricate or somewhat contorted in bud
  • Stamens arising in mouth of corolla tube, included or exserted; filaments linear, glabrous or pubescent at base; anthers oblong
  • Ovary 4-locular with a thick, fleshy wall and a single, erect ovule in each locule; style terminal, 2-branched, with each branch 2-fid; stigmatic branches clavate or linear
  • Fruit a drupe, surrounded at base by a saucer-shaped calyx, with 1 stone, up to 4-locular but only 1 or 2 locules fertile
  • x = 7, 8 (6) (aneuploids, polyploidy)

Nomenclature:

  • Cordia L.
    • Linnaeus: 190 (1753)
    • Linnaeus: 87 (1754)
    • Candolle: 471 (1845)
    • Bentham: 838 (1876)
    • Boissier: 123 (1879)
    • Gürke: 81 (1897)
    • Wright: 4 (1904)
    • Taton: 3 (1971)
    • Warfa: 1 (1988)
    • Martins: 60 (1990)
    • Al-Shehbaz: 43 (1991)
    • Miller: 8 (1991)
    • Verdcourt: 3 (1991)
    • Riedl: 68 (1997)

Distribution & Notes:

  • Global: Species 250-300, in tropical regions of both hemispheres, mainly America
  • Southern Africa: Species 6, widespread except Northern and Western Cape

References:

  • AL-SHEHBAZ, I.A. 1991. The genera of Boraginaceae in the southeastern United States. Journal of the Arnold Arboretum, supplementary series 1
  • BENTHAM, G. 1876. Boragineae. In G. Bentham & J.D. Hooker, Genera plantarum 2. Reeve, London
  • BOISSIER, P.E. 1879. Borragineae. Flora orientalis 4. H. Georg, Geneva
  • CANDOLLE, A.P. DE. 1845. Borragineae. Prodromus 9. Treuttel & Würtz, Paris
  • GÜRKE, M. 1897. Borraginaceae. Die natürlichen Pflanzenfamilien 4, 3a
  • LINNAEUS, C. VON. 1753. Species plantarum. Laurentius Salvius, Stockholm
  • LINNAEUS, C. VON. 1754. Genera plantarum, edn 5. Laurentius Salvius, Stockholm
  • MARTINS, E.S. 1990. Boraginaceae. Flora zambesiaca 7,4
  • MILLER, J.S. 1991. Boraginaceae. In M.D. Dassanayake, A revised handbook to the flora of Ceylon. Amerind Publishing Co. Pvt. Ltd., New Delhi
  • RIEDL, H. 1997. Boraginaceae. Flora malesiana 13
  • TATON, A. 1971. Boraginaceae. Flore du Congo du Rwanda et du Burundi. Boraginaceae
  • VERDCOURT, B. 1991. Boraginaceae. Flora of tropical East Africa. Boraginaceae
  • WARFA, A.M. 1988. Cordia (Boraginaceae) in NE tropical Africa and tropical Arabia. Acta Universitatis Upsaliensis 174
  • WRIGHT, C.H. 1904. Boragineae. Flora capensis 4,2